code: def _start_services(services, env, delay=5):
      """runs the commands in the services list, returns a list of Popen instances
      sets the environment variables in <env>, and delays by <delay> between
      commands
      """
      procs = []
      for cmd in services:
          procs.append(subprocess.Popen(cmd, env=env))
          time.sleep(delay)
  
      return procs
  
file_path: caliban/caliban/resources/caliban_launcher.py
imports: import argparse
  import copy
  import google.auth
  import json
  import logging
  import os
  import subprocess
  import sys
  import time
label_desc: Use image node_id 4 for calling a global function with example usage: _start_services(services, env, delay) and returns: procs